# Forethought vs Sierra: who uses which

On usedby, 23 companies use Forethought and 50 use Sierra. No company is listed with both yet. Counts include every proof level, job-post signals included. Companies named on both have a confirmed or observed line on each side. Latest check 2026-10-07: 73 of 73 public lines checked.

## Side by side

|  | [Forethought](https://www.usedby.ai/tools/forethought.md) | [Sierra](https://www.usedby.ai/tools/sierra.md) |
|---|---|---|
| Public customers | 23 | 50 |
| Confirmed | 17 | 37 |
| Observed | 6 | 13 |
| Signals (job posts) | 0 | 0 |
| Top industries of customers | HR & Recruiting (3), Fintech & Payments (2), Marketing Tech (2) | Fintech & Payments (5), Telecommunications (3), Banking & Mortgages (2) |
| Category | Customer Service Automation | Customer Service Automation |
| Security | ISO 27001, SOC 2 (type not stated) ([forethought.ai](https://forethought.ai/platform/security), checked 2026-10-04) | — |
| Data processing terms | A data processing agreement is available. ([forethought.ai](https://forethought.ai/platform/security), checked 2026-10-04) | A data processing agreement is available. ([sierra.ai](https://sierra.ai/privacy-policy), checked 2026-10-04) |
| Integrations | Zendesk, Salesforce, ServiceNow, Intercom, Freshworks, HubSpot, Jira, Confluence, Shopify, Slack, Genesys, Five9 ([forethought.ai](https://forethought.ai/integrations), checked 2026-10-04) | — |
| Vendor status | Acquired by Zendesk, according to the vendor's homepage. ([forethought.ai](https://forethought.ai/), checked 2026-10-04) | — |

## Published results

Reviewed stories only; usedby did not measure the figures.

- Forethought: [Lime](https://www.usedby.ai/case-studies/lime-forethought.md): **77%**: “77% reduction in time to first response” (captured by usedby 2026-10-05)
- Forethought: [iFIT Health & Fitness Inc.](https://www.usedby.ai/case-studies/ifit-forethought.md): **436 agent hours**: “436 agent hours saved” (captured by usedby 2026-10-05)
- Sierra: [RunBuggy](https://www.usedby.ai/case-studies/runbuggy-sierra.md): **1,000 hours**: “Nearly 1,000 hours per month returned to exception handling and high-value work” (published 2026-02-03)
- Sierra: [Next](https://www.usedby.ai/case-studies/next-sierra.md): **6 weeks**: “Time to live 6 weeks” (published 2026-02-25)

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Source: https://www.usedby.ai/compare/forethought-vs-sierra · How we check: https://www.usedby.ai/methodology